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Finding the Fourth Proportional to 46,643.42, 64,368.60 and 28,728.25

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Solution

The fourth proportional to 46,643.42, 64,368.60 and 28,728.25 is: 39,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,643.42 : 64,368.60 = 28,728.25 : x
  2. Step 2: Convert to fraction form
    46,643.42/64,368.60 = 28,728.25/x
  3. Step 3: Cross multiply
    46,643.42x = 64,368.60 × 28,728.25
  4. Step 4: Simplify right side
    46,643.42x = 1,849,197,232.95
  5. Step 5: Solve for x
    x = 1,849,197,232.95/46,643.42
  6. Step 6: Final answer
    x = 39,645.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.